Railway-signal.



No. 888,959. PATBN'TBD MAY 26, 1908,

' E. M. GAIN.

RAILWAY SIGNAL. APPLICATION FILED IAN. 1'7, 1908. y

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, y Enma? PATENTED MAY 26, 1908.

E. M. GAIN. v'RAILWAY SIGNAL. APrLIoA'rIon FILED JN.17,18o8.'

2 SHEETS-SHEET 24 wi h1 uns .nal light UNITED PATENT OFFICE.'

EDGAR M. vGAIN, OF WILMINGTON, DELAWARE.

RArLWAY-SIGNAL.

Specification of Letters Patent.

Patented May 26, 1908"V Application filed January 17, 1908. Serial No.411,328.

T o all whom itmaycon'cera."

Be it known that I, EDGAR M. GAIN, a citizen ofthe United States,residing at Wilmington, in the county of Newcastle and ysounding theWhistle thirty seconds and thereby calling attention of 4the engineer,brakeman and others on the train of the fact that danger is ahead. Thesignal hereinafter described is especially valuable inA foggy Weatherand at night in the event of the sigetting out of order.

. With tA e above -generalobjeot in view, the

invention consists 1n the novel construction,-

combination and Aarrangement of parts as herein fully described,illustrated and claimed.

2a, In the accompanying drawings ;-.-Figure 1 is a perspective view of aortion of a railway, showing a signal stan and some of the connectionslforming part of the resent invention.` Fig. 2 is anenlarged e evationof the u per portion of the stand, showing the Whist es, valves, valveoperating magnets, etc. Fig. 3 is an enlarged detail sectional view ofthe two Way valve which controls one of the whistles. Fig. '4 is a planview of the same.

Fig. is a detail View of .oneof the magnets 'showing also a ortion ofthe arm of one of the two-Way va ves. Eig. 6 is a detail verticalsection showingr the 4circuit closer and the rmeans -for operating thesame.

Fig.4 7 is a sectional plan view of. thesame.

Referring to the drawings,'1 designates a signal stand arranged at oneside of a railway and equipped with the ordinary signals 2 adapted tobeoperated by compressed air which is led-thereto by a compressed air pi e3 indicated by dotted lines in Fig. 1, tie maincornpressed air ipe line3 having a branch 4whichexten s upward within the standl 1 v Mountedupon the stand 1 is a plurality of y tanks 6 and underthe preferredembodiment of thisl invention', one of said tanks is used for eachItrack and aI whistle 7 is provided for ,each/tank.v vThese whistleshavedistinguishi tended outward ing sounds to designate the respectivetracks to which they refer. The branch pi e 4 which extends upwardwithin the stand) 1 is connected at ya suitable point with a horizontalbranch 8 and this branch 8 is in turn branched as shown at 9, saidbranches 9 being in communication with the whistles 7 and tanks 6 andbeing controlled by a two-Wa valve, as shown at 10. In carrying out thisfeature of the invention, the pipe 9 is provided with aT-coupling orvalve casing 11 in which the valve'l() is rotatablyl mounted,

said valve havin0r the stem 12 thereof eX- beyond the casing and anoperating lever arm 13 bein mounted fast on said stern. The stem 12 as aspring 14 coiled around the same' with one end of the spring secured tothe valve casing, as shown at 15 and the other end engaging over the lei ver arm 12 as shown at 16, the tension of said spring being exerted tohold the lever arm I3 in a substantially horizontal position as shownA1`n'I`ig. 2 and also actin ,to restore the arm to a horizontal positiona ter it has -been elevated by the4 armature 17 and. electro magnet 1Smounted on a bracket 19 secured to the stand.

' The pipe .'20 leads from the valve casing 1.1 into the adjacentcompressed air tank 6 and the passagev 21 of the valve is so cored outthat when the arm 13 occupies a horizontal position, the compressed airdelivered by the pipe 9 passes through the valve and the connection 20into the tank. When the arm 13 .is drawn upward by the action of theelectro magnet 18, the pipe 9 is closed below the valve casing andthenir then passes from the tank '6 through the connection 20' and valvepas- 'prcssed by t ie wheels of the cars irrespective of the directionin which the train is moving. Thebox 22 is recessed in its up er edgeand a rubber gasket 24 in the form o a ring is 'seated in said recess,the lid or cover 23 resting on said gasket and admitting of a limitedamount of depression or downward movement ofthe .moved therefrom.

18 hereinabove descri lid or cover for a' purpose which willappear, saidgasket also serving by its resiliency to again elevate the lid 23 whenstress is re The lid 23 isvprovided with a projection 25 which bearsagainst the underside of a flexible plate 26 which directly'underliesone of l the track rails, the latter. being indicated by f dotted lines`in Fig. 6 at 27. rlhe tie,.just y under the plate 26 is liollowed or(lished somewhat as indicated by dotted lines at 2S l to admit of thedownward movement or de- 'l pression of the plate 26 under the weight ofthe train .in passing over the rail 27.

To the underside of the lid 23 is'secured a l metal plate 29 which isinsulated lroin the lid as shown and provided with a Contact point 30which when depressed is adapted to rest against another-contact point 31in the form of a pin carried by a metal plate 32 mounted on a yieldingsupport 33 and insulated therel from. as shown in Fig.. 6. The support33 is l mounted upon'and upheld at a certain elevation by means of anunderlying spring 34, the Contact points 8() and Bl'being normally out Il of contact. The support 34 is provided with oppositelyA extending`wings 35 which are movable up and down between parallel udes 36. Theseguides are provided with ases 37 by which they are secured in the bottomof the box 22'and the upper ends of said guides are provided with bridgepieces or cutting' bars 38 through which are 'inserted adjusting screws39 by means of1v which the height of the contact points 31 may be nicelyadjusted. Wires 40 and l.tllead ol'l' from the plates 29 and 32 totheproper electro magnet ed, it being understood that a battery orgenerator of any suitclearly shown in able'description is interposed inthe circuit formed by the wires 40'and el.

Thevlid Ior cover 23 is also capable of a slight adjustment which isaccomplished by hinging saidcover at one side of the box as shown a 42and providing an adjusting screw 43 at the o posite side of the box, as6 so that by `tightening or loosening the nut 44 of'the clamping! lscrew the lid may be correspondingly lowered or raised to adapt thesaine to the position of the plate' 26 under the su periinposed rail.

The moment the cap or cover 2.3 is depressed tlie electrical circuit isclosed, the proper magnet is energized, the valve i() shifted and air isapplied by the tank to the appropriate whistle 7. This whistle soundsthirty seconds while the train is passi ing at a point where ithesignaling apparatus is located, thus notifying the trains crew ofdanger. As soon as the ltrain passes vthe apparatus, the compressed airtank is immediately re-eharged in readiness for the next.y train.

Having thus fully described the invention, what is claimed as new is 1.A railway signal emboilying a' compressed air. tank, means i'orintroducing air I into said tank, with the tank, a valve controlling thecoina whistle in comn'iunication niunication between the tank andwhistle, an electro-magnet 'lor operating` said valve, and a trainoperated circuit closer in the same c1r cuit with said magnet,substantially as de- I scribed.

2. A railway signal embodying a coinT pressed air tank, a whistle, acompressed air ,pipe lleading to the whistle and tank, a two way valvecontrolling the the whistle and tank andfrom the tank to the whistle, anelectro-magnet for operating said valve, and a train o erated circuitcloser adapted to be operated) by a moving train. and embodying contactpoints arranged in the saine electrical circuit with the magnet,substantially as`described.

3. A railway signal embodying a whistle, an air tank, a compressed airpipe communieating with the whistle and tank, a valve controlling theadmission ol.' air to the tank and also controlling the passage of airfrom the tank to the whistle, an electro-magnet tor operatinffsaidvalve, and a train operated circuit c oser in'tliesame electricalcircuit with said magnet and embodyingr means operated by the depressionoi a rail `tor setting the circuit closer, substantially as de scribed.

4. A. railway sig-nal embodying an air reservoir,a whistle, anelectro-magnetfor throwing said whistle connected therewith .intooperation, and a 'circuit closer embodying yielding Contact points inthe same electrical circuit with the said magnet, one o'l` said con*tact points being associated with and moved by an unsupported portiono'l one et the contact point carried by said lid, another contact pointyieldingly supported in the box, means for adjusting the position ol thelast named contact point, and an electrical eircuit in which saidcontact points and the electro-magnet are included.

.ln testimony whereof l allix my signature in presence et two witnesses.

EDGAR 'M'. (2* li\'. Vvitn'esses:

dem: L. Frn'rciinn, lnviNe J. lime.

passage of air to.

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